This week's tHEORetically Speaking News Roundup breaks down four major developments shaping policy and biopharma. We cover the new US-UK trade deal exempting pharma from tariffs and resetting NHS pricing, the FDA's push to curb non-human primate testing for monoclonal antibodies, and Capricor's breakthrough Phase 3 results in Duchenne muscular dystrophy. We also highlight new HEOR research using copula modeling to better understand drivers of low birth weight and preterm birth.